Question

Area of the triangle whose base is given by Ā = i + j + k and one of the two sides given by B = 4 + 3j is ​

Answer 1

Explanation:

Area =

2

1

∣

∣

∣

∣

AB

×

AC

∣

∣

∣

∣

=

2

1

∣(4i−j+k)×(3i+j−k)∣=

2

7